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  • De-Gunging a mill...

    Hi all,

    i'm trying to clean up a new-to-me horizontal mill. Its covered in encrusted swarf and dried coolant.

    Is there a decent solvent (in the UK) i can smother it in to loosen it all up a bit?

    At present its soaking in a 50/50 mix of oil and white spirit which has worked well in the past but this one has it beaten i think

    Thanks in advance

    Dave
    If it does'nt fit, hit it.
    https://ddmetalproducts.co.uk
    http://www.davekearley.co.uk

  • #2
    Can you still get "Gunk" Dave?? and some swear by "Jennolite"

    Regards Ian.
    You might not like what I say,but that doesn't mean I'm wrong.

    Comment


    • #3
      I use stuff similar to Jizer from my local oil blenders, basically kerosene + detergent, it's done the same job for me very well in the past and can be washed off with water if need be. I try to soak it up with oil mats, the thin rectangular oil-only absorbent pads.
      If that's not man enough, you could try brake cleaner but that's best done outside because of the fumes. If you can't do it outside, have all doors & windows open, do a bit then go away for a while while the fumes disperse.

      Tim

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      • #4
        needle scaler.

        just don't use it on the ways.

        andy b.
        The danger is not that computers will come to think like men - but that men will come to think like computers. - some guy on another forum not dedicated to machining

        Comment


        • #5
          I just cleaned a big lathe in the same condition. The coolant from the lathe and the adjacent machines had formed a varnish impregnated with 30 years of metal chips that was really tough to get off. I tried "everything".... (mineral spirits, turpentine, lacquer thinner, naphtha, lantern fluid and more...) with all types of pads, and to some degree most worked with varying degreees of elbow grease. The paint still had a brown film and looked muddy... BUT.... by chance I tried Isopropyl Alcohol (rubbing alcohol). WOW... one wipe, chips and coolant gone, and no underlying paint damage. I went to buy it in gallons and found it hard to find on the day, so I bought a few gallons of Methyl Alcohol ("denatured alcohol"). Worked the same or even more aggressively, but left a slight white film behind -no problem - cleaned off nicely with a rub of Hoope's #9 gun cleaning oil.
          Last edited by lakeside53; 07-25-2009, 02:08 AM.

          Comment


          • #6
            Originally posted by lakeside53
            I just cleaned a big lathe in the same condition. The coolant from the lathe and the adjacent machines had formed a varnish impregnated with 30 years of metal chips that was really tough to get off. I tried "everything".... (mineral spirits, turpentine, lacquer thinner, naphtha, lantern fluid and more...) with all types of pads, and to some degree most worked with varying degreees of elbow grease. The paint still had a brown film and looked muddy... BUT.... by chance I tried Isopropyl Alcohol (rubbing alcohol). WOW... one wipe, chips and collant gone, and no underlying paint damage. I went to buy it in gallons and found it hard to find on the day, so I bought a few gallons of Methyl Alcohol ("denatured alcohol"). Worked the same or even more aggressively, but left a slight white film behind -no problem - cleaned off nicely with a rub of Hoope's #9 gun cleaning oil.

            Wow, i hadn't thought of IPA, we use it at work in 25ltr drums on the printing machines, i'll borrow some and try it.

            The brown muck is an absolute ba%$tard to shift, its plastered with aluminium chips which it had been milling for 10 years before i got it. It came from a toolmakers, one owner from new in the '80s but i'm disgusted with the condition its in. There is little oil in any gearbox, less on the ways and the whole thing is covered in this brown sh1te from top to bottom. It used the be the bloke i got from father, i'm guessing it suffered when he got it and started chomping aluminium on it.

            Luckily though, under the muck, the ways are pristine and there is little backlash anywhere. I just hope the gearboxes are as good.

            Thanks all for the ideas.
            Dave
            If it does'nt fit, hit it.
            https://ddmetalproducts.co.uk
            http://www.davekearley.co.uk

            Comment


            • #7
              Foaming glass cleaner that comes in spray cans is real good.

              Some guys say oven cleaner does a good job too.

              Both are cheap and easy to find.

              Comment


              • #8
                i say, take it outside and put the pressure washer on it ..

                i always use 50/50 biological washing powder and hot water in a jug.

                leave this stuff on long enough and it will take paint off ..

                all the best.markj

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                • #9
                  Metanol works great. But for greasy stuff I prefer something with lye in it. Like Zep Purple.

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                  • #10
                    get a bucket of strong industrial detergent ,
                    and go at it with a presure washer, aim the pressure wassher so it doest drive muck under ways ect i am sure you get the idea

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                    • #11
                      50/50 concentration of "Simple Green" works wonders for me. Keep it wet with simple green for 30-45 minutes and then brush all the dirt grime and chips away

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                      • #12
                        I used several quarts of Greased Lightening, available at an auto parts store or Walmart, and at least a dozen rolls of shop (paper) towels, along with steel wool.
                        AND LOTS AND LOTS OF ELBOW GREASE.

                        Someone mentioned a needle gun. I will try that next time.

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                        • #13
                          my s-b came that way and it still is covered with it. i tried oven cleaner degreaser paint remover even used the needle gun on some real bad spots. so i just gave up and have been using it ever since.

                          Comment


                          • #14
                            Thanks all, i'm sure most of those cleaners are not available in the UK But i'll try the IPA first, i dont need it spotless, just to a good usable state. None of my machines are filthy, i wouldnt do it, always wiped down at least once a week and chips brushed off each day.

                            The manual states grease for the ball bearings and oil for the rest but i cant find any ball bearing points???

                            Shell vitrea 33 oil which i think is iso68 and is used in my other machines so that ok, i just hope the oil pump is not buggered.

                            Dave
                            If it does'nt fit, hit it.
                            https://ddmetalproducts.co.uk
                            http://www.davekearley.co.uk

                            Comment


                            • #15
                              IPA thought you meant India pale ale, which might result in not much workgetting done but a good way to start.

                              teepol makes industrial detergent in the uk

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